/* Copyright (C) 1991,1993,1996-1999,2000 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.
*/


#include <stdio_private.h>

#include <limits.h>
#include <string.h>


/**	Generate a unique temporary filename using up to five characters of PFX
 *	if it is not NULL.  The directory to put this file in is searched for
 *	as follows: First the environment variable "TMPDIR" is checked.
 *	If it contains the name of a writable directory, that directory is used.
 *	If not and if DIR is not NULL, that value is checked.  If that fails,
 *	P_tmpdir is tried and finally "/tmp".  The storage for the filename
 *	is allocated by `malloc'.
 */

char *
tempnam(const char *dir, const char *prefix)
{
	char buffer[NAME_MAX];

	if (__path_search(buffer, NAME_MAX, dir, prefix, 1))
		return NULL;

	if (__gen_tempname(buffer, __GT_NOCREATE))
		return NULL;

	return strdup(buffer);
}

//link_warning(tempnam, "the use of `tempnam' is dangerous, better use `mkstemp'")
